ACI Certification- Concrete Field-Testing Technician Grade 1 CP-1 (12) 100% Correct.

ASTM C1064 - ANSWER Standard Test Method For Temperature of Freshly Mixed Hydraulic-Cement Concrete The sensor of the temperature measuring device shall be submerged a minimum of ______ inches into the freshly mixed concrete. - ANSWER 3" The temperature measuring device shall have a capacity of measuring temperature of freshly mixed concrete to ± ______ °F throughout a range of ____________. - ANSWER 1 degree, 30 degrees to 120 degrees The temperature measuring device shall be calibrated ______ , or whenever there is a question of ______ . - ANSWER Annually, accuracy The temperature of concrete may be measured in a wheelbarrow. True or False? - ANSWER True The temperature of concrete may be measured in a wall form. True or False? - ANSWER True What must be done to the sample container prior to sampling the concrete? - ANSWER Dampen with water What must be done to the concrete surrounding the temperature measuring device after the device is submerged in the fresh concrete? - ANSWER Close off air voids by gently pressing the concrete around the device How long must the temperature measuring device remain in the freshly mixed concrete? - ANSWER minimum of two minutes, maximum of five minutes The temperature of the concrete is reported to the nearest ______ °F - ANSWER 1 degree A maximum temperature of freshly mixed concrete is specified in ASTM C1064. True or False? - ANSWER False A